US Bridges

Arch Road over Winnebago Ditch

Poor

Whiteside County, Illinois · 7 MI S Rock Falls · Structure no. 098440800000000

Built
1976
49 years old
Condition
Poor
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
85 ft
3 main spans
Daily traffic
75
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Arch Road over Winnebago Ditch is a prestressed concrete box beam or girders - multiple carrying Arch Road over Winnebago Ditch in Whiteside County, Illinois. It was built in 1976, so it is 49 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 75 vehicles a day, roughly 11% of them trucks, projected to reach 76 by 2046. The structure is 85 ft (25.8 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesArch Road
CrossesWinnebago Ditch
Location7 MI S Rock Falls
RouteCounty Highway 0
Coordinates41.67153, -89.64282
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating43.2 US tons
Inventory rating26.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length85 ft (25.8 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic76 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Arch Road over Winnebago Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is Arch Road over Winnebago Ditch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Arch Road over Winnebago Ditch carry?

About 75 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Arch Road over Winnebago Ditch?

The structure is 85 ft (25.8 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns Arch Road over Winnebago Ditch?

It is owned by the Town or Township Highway Agency.